#!/usr/bin/python
#
#
#

import sys, imp, atexit
sys.path.append("/home/courses/cs3214/software/pexpect-dpty/");
import pexpect, shellio, signal, time, os, re, proc_check

#Ensure the shell process is terminated
def force_shell_termination(shell_process):
	c.close(force=True)

#pulling in the regular expression and other definitions
definitions_scriptname = sys.argv[1]
def_module = imp.load_source('', definitions_scriptname)
logfile = None
if hasattr(def_module, 'logfile'):
    logfile = def_module.logfile

# spawn an instance of the shell
c = pexpect.spawn(def_module.shell, drainpty=True, logfile=logfile, args=['-p','plugins/'])
atexit.register(force_shell_termination, shell_process=c)

# set timeout for all following 'expect*' calls to 2 seconds
c.timeout = 2

#test change dir
c.sendline("cd")
c.sendline("cd ..")
c.sendline("pwd")
#assert c.expect("ugrads/majors") == 0, "Wrong directory!" # exact result: /home/ugrads/majors
#assert c.expect_exact("ugrads/majors") == 0, "Wrong directory!" # still
#assert c.expect_exact("/home/ugrads/majors") == 0, "Wrong directory!"
# assert c.expect("ugradsss/majors") == 0, "Wrong directory!" #FAIL

c.sendline("cd ~cs3214/bin")
c.sendline("pwd")
assert c.expect("/home/courses/cs3214/bin") == 0, "Wrong directory!"
# assert c.expect("/home/courses/cs3214") == 0, "Wrong directory!" #FAIL

# ~cs3214 and ~/cs3214 are different


# end the shell program by sending it an end-of-file character
c.sendline("exit");
# ensure that no extra characters are output after exiting
assert c.expect_exact("exit\r\n") == 0, "Shell output extraneous characters"

# the test was successful
shellio.success()